Duplicated error messages on cargo test.

[dpc]

Why am I getting same error twice?

[nix-shell:~/lab/crev]$ cargo test
   Compiling crev-lib v0.0.1 (file:///home/dpc/lab/crev/crev-lib)                                                                   
error[E0425]: cannot find function `f` in this scope
   --> crev-lib/src/repo/mod.rs:150:9
    |
150 |         f();
    |         ^ not found in this scope

error[E0425]: cannot find function `f` in this scope
   --> crev-lib/src/repo/mod.rs:150:9
    |
150 |         f();
    |         ^ not found in this scope

error: aborting due to previous error

For more information about this error, try `rustc --explain E0425`.
error: Could not compile `crev-lib`.
warning: build failed, waiting for other jobs to finish...
error: aborting due to previous error

For more information about this error, try `rustc --explain E0425`.
error: Could not compile `crev-lib`.

To learn more, run the command again with --verbose.

[nix-shell:~/lab/crev]$ rustc --version
rustc 1.30.0-nightly (551244f05 2018-09-10)

In case it might be project-specific, you can download https://github.com/dpc/crev

[cuviper]

If you use --verbose, you'll see the rustc commands. Most likely this is the library being built normally and with unit tests at the same time, adding --test for the latter.

[estebank]

This is rust-lang/cargo#5128 running rustc twice. It needs to be fixed.